Proud Kate looks on as Queen makes Prince William Knight of the Thistle

The Duke of Cambridge was installed at a service in Edinburgh in front of his wife.

Kate joined the Queen, the Duke of Edinburgh, the Princess Royal and hundreds of guests at the city’s St Giles’ Cathedral.

Thousands of people crowded on to the Royal Mile to catch a glimpse of the pair – known as the Earl and Countess of Strathearn while in Scotland – and other royals as they made their way into the cathedral.

The Order of the Thistle is second in Britain only to the Order of the Garter – which the Duke of Cambridge was given in 2008.

It honours those who have held public office or made a major contribution to national life.

In the internal Thistle Chapel, the Queen said: ‘It is our pleasure that His Royal Highness the Prince William, Earl of Strathearn, be installed a Knight of the most ancient and most noble Order of the Thistle.’

A jubilee parade followed, with 400 pipers marching to the Scottish Parliament.